Dyness B3 ESS Unit Lithium Battery 3.6kWh 48V User manual

Brand: Dyness

Model: B3 ESS Unit Lithium Battery 3.6kWh 48V

Category: Power adapters & inverters

Type: User manual

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B3 ESS Unit

User Manual

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B3 ESS Unit User Manual

Content

STATEMENT OF LAW.................................................................................................................................1

SAFETY PRECAUTIONS AND MAINTENANCE INSTRUCTIONS ................................................................. 2

PREFACE.................................................................................................................................................... 3

1 INTRODUCTION..................................................................................................................................... 4

1.1 BRIEF INTRODUCTION..........................................................................................................................4

1.2 PRODUCT PROPERTIES.........................................................................................................................4

1.3 PRODUCT IDENTITY DEFINITION.............................................................................................................4

2 PRODUCT SPECIFICATION..................................................................................................................... 5

2.1 SIZE AND WEIGHT.............................................................................................................................. 5

2.2 PERFORMANCE PARAMETER.................................................................................................................5

2.3 INTERFACE DEFINITION........................................................................................................................ 5

2.3.1 DIP switch definition and description......................................................................................6

2.4 BATTERY MANAGEMENT SYSTEM(BMS)............................................................................................... 9

2.4.1 Voltage Protection................................................................................................................. 9

2.4.2 Current Protection..................................................................................................................9

2.4.3 Temperature Protection.......................................................................................................1 0

2.4.4 Other Protection...................................................................................................................1 0

3 INSTALLATION AND CONFIGURATION............................................................................................... 11

3.1 PREPARATION FOR INSTALLATION........................................................................................................11

3.1.1 Environmental requirements............................................................................................... 1 1

3.1.2 Tools and data......................................................................................................................1 1

3.1.3 Technical preparation.......................................................................................................... 1 2

3.1.4 Unpacking inspection...........................................................................................................1 2

3.1.5 Engineering coordination.....................................................................................................1 4

3.2 EQUIPMENT INSTALLATION.................................................................................................................14

3.2.1 Installation preparation........................................................................................................1 4

3.2.2 Mechanical installation.........................................................................................................1 5

3.2.3 Electrical installation............................................................................................................1 6

3.2.4 Battery parameter settings on the inverter.........................................................................1 8

3.2.5 Register on the website after installation............................................................................1 8

4 USE, MAINTENANCE AND TROUBLESHOOTING................................................................................ 19

4.1 BATTERY SYSTEM USAGE AND OPERATION INSTRUCTIONS....................................................................... 19

4.2 ALARM DESCRIPTION AND PROCESSING................................................................................................2 0

4.3 ANALYSIS AND TREATMENT OF COMMON FAULTS.................................................................................. 20

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B3 ESS Unit User Manual

Statement of Law

No part of this documentation maybe excerpted, reproduced, translated,

annotated or duplicated in any form or by any means without the prior

This product complies with the design requirements of environmental protection and personal

safety. The storage, use and disposal of the products shall be carried out in accordance with the

product manual, relevant contract or relevant laws and regulations.

Customer can check the related information on the website of Daqin New Energy Tech (Taizhou)

Co., Ltd when the product or technology is updated.

Web URL：http://www.dyness-tech.com.cn

Please note that the product can be modified without prior notice.

Revision History

Revision NO.

Revision Date

Revision Reason

1.0

2019.04.24

1.First Published

1.1

2019.06.24

1. System adds DIP switch

2. Renamed B4874 to B3

1.2

2019.07.29

1.Update the cable specification

1.3

2020.06.28

1.Add battery parameter settings on the inverter.

2.Add register on the website after installation.

1.4

2020.09.27

1.Add new inverters in DIP switch description

1.5

2021.01.10

1.Update the design

1.6

2021.03.24

1. Update the description of the DIP setting

2.Delete the description of the non-DIP model

1.7

2021.09.06

1.Update the size of new B3

2.Power cable is changed to optional3.Update charge

current limit value to 1A in protection mode.

3.Update DIP switch description.

产品版本

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B3 ESS Unit User Manual

Safety Precautions maintenance instructions

Warning

Please do not put the battery into water or fire, in case of explosion or any other situation

that might endanger your life.

Please connect wires properly while installation, do not reverse connect.

To avoid short circuit, please do not connect positive and negative poles with conductor on

the same device.

Please avoid any form of damage to battery, especially stab, hit, trample or strike.

Please shut off the power completely when removing the device or reconnecting wires

during the daily use or it could cause the danger of electric shock.

Please use dry powder extinguisher to put out the flame when encountering a fire hazard,

liquid extinguisher could result in the risk of explosion.

For your safety, please do not arbitrarily dismantle any component in any circumstances.

The maintenance must be implemented by authorized technical personnel or our

company’s technical support. Device breakdown due to unauthorized operation will not be

covered under warranty.

Caution

Our product have been strictly inspected before shipment. Please contact us if you find any

abnormal phenomena such as device outer case bulging.

The product shall be grounded properly before use in order to ensure your safety.

To assure the proper use please make sure parameters among the relevant device are

compatible and matched.

Please do not mixed-use batteries from different manufacturers, different types and models,

as well as old and new together.

Ambient and storage method could impact the product life span, please comply with the

operation environment instruction to ensure device works in proper condition.

For long-term storage, the battery should be recharged once every 6 months, and the

amount of electric charge shall exceed 80% of the rated capacity.

Please charge the battery in 18 hours after it fully discharged or over-discharging protection

mode is activated.

Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total

current of all loads).

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B3 ESS Unit User Manual

Preface

Manual declaration

B3 lithium iron phosphate battery energy storage system can provide energy storage

for photovoltaic power generation users through parallel combination. Our product can store

extra electricity into battery from photovoltaic power generation system in daytime and supply

stable power to user’s equipment as power backup at nighttime or any time when needed. It can

improve the efficiency of photovoltaic power generation and increase the electric power

efficiency by peak load shifting.

This user manual details the basic structure, parameters, basic procedures and methods of

installation and operation and maintenance of the equipment.

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B3 ESS Unit User Manual

1 Introduction

1.1 Brief Introduction

B3 lithium iron phosphate battery system is a standard battery system unit, customers can

choose a certain number of B3 according to their needs, by connecting parallel to form a larger

capacity battery pack, to meet the user's long-term power supply needs. The product is

especially suitable for energy storage applications with high operating temperatures, limited

installation space, long power backup time and long service life.

1.2 Product Properties

B3 energy storage product’s positive electrode materials are lithium iron phosphate, battery cells

are managed effectively by BMS with better performance, the system’s features as below:

Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment-

friendly battery.

Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.

Carries battery management system with better performance, possesses protection

function like over-discharge, over-charge, over-current, abnormal temperature.

Self-management on charging and discharging, Single core balancing function.

Intelligent design configures integrated inspection module.

Flexible configurations allow parallel of multi battery for longer standby time.

Self-ventilation with lower system noise.

Less battery self-discharge, then recharging period can be up to 10 months during the

storage.

No memory effect so that battery can be charged and discharged shallowly.

With wide range of temperature for working environment, -20℃~ +55 ℃, circulation span

and discharging performance are well under high temperature.

Less volume, lighter weight.

1.3 Product identity definition

Figure1-1 Battery Energy Storage System nameplate

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B3 ESS Unit User Manual

Battery voltage is higher than safe voltage, direct

contact with electric shock hazard.

Be careful with your actions and be aware of the

dangers.

Read the user manual before using.

The scrapped battery cannot be put into the garbage can

and must be professionally recycled.

After the battery life is terminated, the battery can

continue to be used after it recycled by the professional

recycling organization and do not discard it at will.

This battery product meets European directive

requirements.

This battery product passed the TUV certification test.

Dangerous goods warning label on the top of the battery

module

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B3 ESS Unit User Manual

2 Product Specification

2.1 Size and Weight

Table 2-1 B3 Device size

Product

Nominal

Voltage

Nominal

Capacity

Dimension

Weight

DC48V

75Ah

480×405×132mm

≈32.5kg

2.2 Performance Parameter

Table 2-2 B3 performance parameter

Item

B3 Parameter value

Nominal Voltage (V)

Work Voltage Range (V)

42~54

Nominal Capacity (Ah)

Nominal Energy (kWh)

3.6

Recommended Charge/Discharge Current (A)

37.5

Max. Power Charge/Discharge Current (A)

Peak Power Charge/Discharge Current (A)

100 (15S)

Charge Voltage (Vdc)

53.5

2.3 Interface Definition

This section elaborates the interface functions of the front interface of the device.

2 3 4 5 6 7 12 8 9 10 11

Figure2-1

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B3 ESS Unit User Manual

Table 2-3 Interface Definition

Item

Name

Definition

Powerswitch

OFF/ON, remains ‘ON when using

Positivesocket

Battery output or parallel positive line

ADD

DIP switch

SW (battery

wake/sleep

Switch)

When power switch is in ‘ON’, long pressing SW for 3s to enable

the battery for switch-on ,then switch on the DC breaker

between the battery with inverter.If you need to shut down the

system,firstly swich off the DC breaker between the battery with

the inverter, then press SW for 3s and switch the power button

to “OFF”.

SOC

Green light, showing battery capacity

ALM

Red lights, flash when warming, always on when

Protection. When the condition of triggering protection is

removed, the battery can recover automatically

RUN

Green light, flashing when standby, always on when discharge,

flash when charging

CAN/485

Communication Port

Communication (factory default CAN communication)

DRY CONTACT

Negative socket

Battery output or parallel negative line

Grounding

Shell ground connection

COM

Communication port, support RS232

2.3.1 DIP switch definition and description

Table 2-4 Interface Definition

DIP switch position (master communication protocol and baud rate selection)

Define different protocols；

Distinguish between master and slave

OFF：CAN: 500K,485: 9600

ON：CAN: 250K,485: 115200

DIP switch description:

When the batteries are connected in parallel, the master communicates with the slaves through

the CAN interface. The master summarizes the information of the entire battery system and

communicates with the inverter through CAN or 485.

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B3 ESS Unit User Manual

1. If the master is the latest B3 battery with DIP switch:

(1) The communication cable from the master CAN IN to the inverter comm port should be

the correct one.

(2) When the battery works with GOODWE、Solis、LUX、Sofar、DEYE、VICTRON、

IMEON、Sungrow、SMA、RENAC、DELIOS、SAJ(CAN Comm) ,before starting the

battery,you need put the master DIP switch "# 3" to the "ON" position (to the top), then turn

on the batteries.

Master Setting 1

(3) If the battery communicates with the Axpert-king/VMIII/MAX,Infinisolar,Growatt

SPH/SPA(CAN comm)、GMDE, turn the master DIP switch "#2" to "ON" position.

Master Setting 2

(4) If the battery communicates with the Growatt SPF HVM-P/ES/WPV by RS485 comm, turn

the master DIP switch "#2" and "#3" to "ON".

Master Setting 3

(5) If the battery communicates with the Schneider Conext Series, turn the master DIP switch

"#1" and "#3" to "ON".

Master Setting 4

(6) When you setup the master DIP as setting 1~4,all the slaves keep the DIP 0000,no need

change.

(7) If the energy storage system has only one B3, it is the master itself, and still follow the

above steps.

Note: For more information of matching inverter brands, please subject to the latest

document

<The list of compatibility between Dyness ESS and Inverters >.

Figure 2-2 CAN/485 interface definition

Front

Plug Socket of communication port

CAN/485

Table 2-5 Pin Definition

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B3 ESS Unit User Manual

Below is pin Definition of B3

Foot position

Color

Definition

PIN1

Orange/white

485B

PIN2

Orange

485A

PIN3

Green/white

GND

PIN4

Blue

CANH

PIN5

Blue/white

CANL

PIN6

Green

Reserve

PIN7

Brown/white

XIN

PIN8

Brown

Reserve

PIN9

Orange/white

Reserve

PIN10

Orange

Reserve

PIN11

Green/white

GND

PIN12

Blue

CANH

PIN13

Blue/white

CANL

PIN14

Green

Reserve

PIN15

Brown/white

XOUT

PIN16

Brown

Reserve

The Pin definition of COM port

Foot position

Definition

PIN1

Reserve

PIN2

GND

PIN3

TXD

PIN4

RXD

PIN5

GND

PIN6

Reserve

Note:Please pay attention of the communication com definition of inverter,in order to avoid

voltage in the port to affect communication.

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B3 ESS Unit User Manual

Table 2-6 LED status indicators

status indicators of B3

Battery

Status

SOC

LED1

LED2

LED3

LED4

LED5

ALM

RUN

Shutdown

off

Standby

80%＜SOC≤100%

●

off

Flashing

60%＜SOC≤80%

●

off

Flashing

40%＜SOC≤60%

●

off

Flashing

20%＜SOC≤40%

●

off

Flashing

0%＜SOC≤20%

●

off

Flashing

SOC=0

off

Flashing

/●

Flashing

Charging

SOC=100%

●

off

Flashing

80%＜SOC＜100%

●

Flashing

off

Flashing

60%＜SOC≤80%

●

Flashing

off

Flashing

40%＜SOC≤60%

●

Flashing

off

Flashing

20%＜SOC≤40%

●

Flashing

off

Flashing

0% ≤SOC≤20%

Flashing

off

Flashing

Discharging

80%＜SOC≤100%

●

off

●

60%＜SOC≤80%

●

off

●

40%＜SOC≤60%

●

off

●

20%＜SOC≤40%

●

off

●

0%＜SOC≤20%

●

off

Flashing

●

SOC=0

off

Flashing

/●

Flashing/●

A special ALM light flashing state: when the communication between batteries is

lost or abnormal, all the lights from SOC to RUN of the master battery will flash

together.

● means green light always on ● means red light always on

Flashing: means green light flashing or red light flashing

2.4 Battery Management System(BMS)

2.4.1 Voltage Protection

Low Voltage Protection in Discharging：

When any battery cell voltage or total voltage is lower than the rated protection value during

discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm

sound. Then battery system stops supplying power to the outside. When the voltage of each cell

back to rated return range, the protection is over.

Over Voltage Protection in Charging：

Battery will stops charging when total voltage or any battery cell voltage reaches the rated

protection value during charging stage. When total voltage or all cell back to rated range, the

protection is over.

2.4.2 Current Protection

Over Current Protection in Charging：

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B3 ESS Unit User Manual

B3: when the charge current ＞90A, current limit protection mode is activated, current will be

limited to 1A,protection is removed after rated time delaying 10S. Circulate like this until the

current is lower than 90A.

Over Current Protection in Discharging：

When the discharge current is higher than the protection value, the battery buzzer alarms and

the system stops discharging. Protection is released after rated time delaying.

Caution:

The buzzer sound alarm setting can be manually turned off on the background software, and the

factory default is on.

2.4.3 Temperature Protection

Low/Over temperature protection in charging：

When battery’s temperature is beyond range of -5 ℃~+55 ℃during charging,

temperature protection is activated, device stops charging.The protection is over when

temperature back to rated working range.

Low/Over temperature protection in discharging：

When battery’s temperature is beyond range of -20 ℃~+55 ℃during discharging,

temperature protection is activated, device stops supplying power to the outside.The protection

is over when temperature back to rated working range..

2.4.4 Other Protection

Short Circuit Protection：

When the battery is activated from the shutdown state, if a short circuit occurs, the system starts

short-circuit protection for 60 seconds.

Self-Shutdown：

When device connects no external loads and power supply and no external communication for

over 72 hours, device will dormant standby automatically.

Caution

Battery’s maximum discharging current should be more than load’s maximum working current.

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B3 ESS Unit User Manual

3 Installation and Configuration

3.1 Preparation for installation

Safety Requirement

This system can only be installed by personnel who have been trained in the power supply

system and have sufficient knowledge of the power system.

The safety regulations and local safety regulations listed below should always be followed during

the installation.

All circuits connected to this power system with an external voltage of less than 48V

must meet the SELV requirements defined in the IEC60950 standard.

If operating within the power system cabinet, make sure the power system is not

charged. Battery devices should also be switched off.

Distribution cable wiring should be reasonable and has the protective measures to avoid

touching these cables while operating power equipment.

when installing the battery system, must wear the protective items below:

The isolation gloves Safety goggles Safety shoes

Figure3-1

3.1.1 Environmental requirements

Working temperature: -20 ℃~ +55 ℃

Charging temperature range is 0℃~+55 ℃,

Discharging temperature range is -20 ℃~+55 ℃

Storage temperature: -10 ℃~ +35 ℃

Relative humidity: 5% ~ 85%RH

Elevation: no more than 4000m

Operating environment: Indoor installation, sites avoid the sun and no wind, no

conductive dust and corrosive gas.

And the following conditions are met:

Installation location should be away from the sea to avoid brine and high humidity

environment.

The ground for product arrangement shall be flat and level.

There is no flammable explosive materials near to the installation site.

The optimal ambient temperature is 15℃~ 30℃.

Keep away from dust and messy zones.

3.1.2 Tools and data

Tools and meters that may be used are shown in table 3-1.

Table 3-1 Tool instrument

Name

Screwdriver（Slotted、Phillips）

Multimeter

Torque wrench

Clamp current meter

Diagonal pliers

Insulation tape

Pointed nose pliers

Temperature meter

Pliers to hold the wire

Anti-static bracelet

Stripping pliers

Cable tie

Electric drill

Tape measure

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B3 ESS Unit User Manual

3.1.3 Technical preparation

Electrical interface check

Devices that can be connected directly to the battery can be user equipment, power supplies, or

other power supplies.

Confirm whether the user's PV power generation equipment, power supply or other

power supply equipment has a DC output interface, and measure whether the DC power

output voltage meets the voltage range requirements in Table 2-2.

Confirm that the maximum discharge current capability of the DC power interface of the

user's photovoltaic power generation equipment, power supply or other power supply

equipment should be higher than the maximum charging current of the products used in

Table 2-2.

If the maximum discharge capacity of the DC power interface of the user's photovoltaic

power generation equipment is less than the maximum charging current of the products

used in Table 2-2, the DC power interface of the user's photovoltaic power generation

equipment shall have a current limiting function to ensure the normal operation of the

user’s equipment.

Verify that the maximum operating current of the battery-powered user equipment

(inverter DC input) should be less than the maximum discharge current of the products

used in Table 2-2.

The security check

Firefighting equipment should be provided near the product, such as portable dry powder

fire extinguisher.

Automatic fire fighting system shall be provided for the case where necessary.

No flammable, explosive and other dangerous materials are placed beside the battery.

3.1.4 Unpacking inspection

When the equipment arrives at the installation site, loading and unloading should be

carried out according to the rules and regulations, to prevent from being exposed to sun

and rain.

Before unpacking, the total number of packages shall be indicated according to the

shipping list attached to each package, and the case shall be checked for good condition.

In the process of unpacking, handle with care and protect the surface coating of the object.

Open the package, the installation personnel should read the technical documents, verify

the list, according to the configuration table and packing list, ensure objects are complete

and intact, if the internal packing is damaged, should be examined and recorded in detail.

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B3 ESS Unit User Manual

Packing list is as

follows: Item

Specification

Quantity

Figure

Battery-B3

48V/75Ah

480×405×132mm

Power cable-

positive

Red

/25mm2/L2050mm

Optional:

If you need,

please

contact the

dealer to

purchase

Power cable-

negative

Black

/25mm2/L2050mm

Optional:

If you need,

please

contact the

dealer to

purchase

Parallel cable-

positive

Red

/25mm2/L215mm

Parallel cable-

negative

Black

/25mm2/L215mm

Communication

parallel cable

Black

/L250mm/Double

RJ45 plug

Communication

cable-to inverter

Black

/L2000mm /Double

RJ45 plug

Ground wire

L500mm,4mm²

User Manual

B3 User manual

Screw

Combination screws

M6*14

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B3 ESS Unit User Manual

3.1.5 Engineering coordination

Attention should be paid to the following items before construction:

Power line specification.

The power line specification shall meet the requirements of maximum discharge current

for each product.

Mounting space and bearing capacity.

Make sure that the battery has enough room to install, and that the battery rack and

bracket have enough load capacity.

Wiring.

Make sure the power line and ground wire are reasonable. Not easy to short-circuit, water

and corrosion.

3.2 Equipment installation

Table 3-2 Installation steps

Step1

Installation

preparation

Confirm that the ON/OFF switch on the front panel of B3

unit is in the “OFF” state to ensure no live operation.

Step 2

Mechanical

installation

1. Battery placement position determination

2. Battery module installation

Step3

Electrical

installation

1. Ground cable installation

2. Battery module parallel cable installation

3. Parallel communication cable connection

Step4

Battery system

self-test

1. Turn the ON/OFF switch to the "ON" state

2. Press SW button 3S to wake up battery

3. Check the system output voltage and led status

4. Shut down the system

Step5

Connecting

inverter

1. Connect total positive & total negative cable of the

battery system to the inverter

2. Battery module total positive cable installation

3. Battery module total negative cable installation

4. Connect the communication cable from the master

CAN IN to the inverter

5.Turn on the Power switch and wake up system by

SW button

6.Close the DC breaker between inverter and battery

7.Turn on the inverter and check the communication

between inverter and battery system

3.2.1 Installation preparation

1. Prepare equipment and tools for installation.

2. Check the B3 unit and confirm that the ON/OFF switch is in the "OFF" state to ensure the

device is shut off.

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B3 ESS Unit User Manual

3.2.2 Mechanical installation

Installation method:

The scope of product certification does not extend to

third party supplied racks/cabinets.

1.Place the B3 unit on the bracket as

shown in the figure and push the device

into the cabinet at the installation

position. (The cabinet structure in the

figure is for reference only)

2. Secure the B3 unit to the cabinet

with a nut through the mounting

holes top on the hanging ears of the

B3 unit.

3. Clearances required around battery,

Showns as Figure3-4

Installation method 2: With Simple bracket installation

1. Place the B3 and brackets as

shown in the figure3-5, and

insert the B3 into the

brackets.Use 4 screws to fix

the module on the front

bracket.

2. Install another pair of bracket

on the first one,fixed by

buckles between them.

Figure3-2

Figure3-3

Figure3-4

Figure3-5

Figure3-6

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B3 ESS Unit User Manual

3. Insert the second one B3 into

the brackets.

Figure3-7

4. Stack the required number of

battery and bracket combinations

as described above, and fasten

the top and bottom buckles.

Shown as Figure3-8.

Figure3-8

5. clearances required around

battery,Shown as Figure3-9.

Figure3-9

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B3 ESS Unit User Manual

3.2.3 Electrical installation

Statement：For Australian market, installations should be conducted in

accordance with AS/NZS 3000 and AS/NZS 5139.

Before connecting the power cables, use multi-meter to measure cable continuity, short circuit,

confirm positive and negative, and accurately mark the cable labels.

Measuring methods：

Power cable check: select the buzzer mode of multimeter and detect the both ends of

the same color cable. If the buzzer calls, it means the cable is in good condition.

Short circuit judgment: choose multi-meter resistor file, probe the same end of positive

and negative pole, if the resistor shows infinity, means that the cable is available.

After visual testing of power line connection, the positive and negative poles of the

battery shall be connected respectively to the positive and negative poles of the opposite

terminal.

It is better to add a circuit breaker between the inverter and the battery system. The selection of

the circuit breaker requires:

Current: I =

Inverter power

45V

Voltage: U>60V

For Australian Market, a over-current and isolation device is required between

battery system and inverter.

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Dyness B3 ESS Unit Lithium Battery 3.6kWh 48V User manual

Brand: Dyness

Model: B3 ESS Unit Lithium Battery 3.6kWh 48V

Category: Power adapters & inverters

Type: User manual

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Dyness B3 ESS Unit Lithium Battery 3.6kWh 48V User manual

Dyness B3 ESS Unit Lithium Battery 3.6kWh 48V User manual

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